Jasmine spyOn with specific arguments

Question

Suppose I have

spyOn($cookieStore,'get').and.returnValue('abc'); 

This is too general for my use case. Anytime we call

$cookieStore.get('someValue') -->  returns 'abc' $cookieStore.get('anotherValue') -->  returns 'abc' 

I want to setup a spyOn so I get different returns based on the argument:

$cookieStore.get('someValue') -->  returns 'someabc' $cookieStore.get('anotherValue') -->  returns 'anotherabc' 

Any suggestions?

Answer 1

You can use callFake:

spyOn($cookieStore,'get').and.callFake(function(arg) {     if (arg === 'someValue'){         return 'someabc';     } else if(arg === 'anotherValue') {         return 'anotherabc';     } }); 

Answer 2

To the ones using versions 3 and above of jasmine, you can achieve this by using a syntax similar to sinon stubs:

spyOn(componentInstance, 'myFunction')       .withArgs(myArg1).and.returnValue(myReturnObj1)       .withArgs(myArg2).and.returnValue(myReturnObj2); 

details in: https://jasmine.github.io/api/edge/Spy#withArgs